One day the iDrive control system on my BMW 525i 2005 completely turned off. The radio, CD player, and bluetooth do not work at all. Anything that has to do with the iDrive is not working. I have checked the fuses (in the trunk) and recharged my battery and still nothing worked. Also, I recently took it to dealership because of last years recall for the battery fuse (that had to changed out), and after that it still did not work. I approached the dealership after that and they said they did not detect anything wrong with the car. I have no idea what is wrong with the iDrive.